THz valence band polaritons and antipolaritons

FARAGAI, I A and PEREIRA, Mauro (2014). THz valence band polaritons and antipolaritons. In: RAZEGHI, Manijeh, BARANOV, Alexei N, ZAVADA, John M and PAVLIDIS, Dimitris, (eds.) Proceedings of SPIE : Terahertz Emitters, Receivers, and Applications V. Society of Photo-Optical Instrumentation Engineers, 91990H.

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The coupling of THz and intersubband excitations leads to THz polaritons and antipolaritons and has great potential for device applications. In this paper, based on the dielectric function formalism, we investigate the relevance of controlling cavity resonance and dephasing in the THz polariton and antipolariton dispersions. The input optical dielectric constant stems from numerically exact nonequilibrium many body solutions which are adjusted to a simplified nonlinear dielectric susceptibility. The resulting expression is inserted in the wave equation to describe the coupling of TE- polarized THz radiation and intervalence band transitions in GaAs/Al0.3Ga0.7As multiple quantum well structures with various resonance conditions.

Item Type: Book Section
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group
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Page Range: 91990H
Depositing User: Hilary Ridgway
Date Deposited: 13 Jan 2015 10:36
Last Modified: 18 Mar 2021 09:15

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